1,The shell is made of materials, which makes more wear resistant, does not rust, and prolongs the service life. 2,Adopts heat treatment process after grinding, which has the advantage of low noise and excellent performance. 3,Uses all copper coil, which has strong conductivity, high temperature resistance, and can effectively isolate dust. 4,Easy to fix, does not slip, saves installation time, has an automatic constant temperature protection function, and can prevent the signal from being interfered and inserted into the outside world. 5,Can be used in household appliances, office equipment, electronic door locks, electric curtains, vending machines, auto facilities, automatic control, etc. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.